Journal
LAB ON A CHIP
Volume 3, Issue 3, Pages 158-163Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b305074m
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Funding
- NATIONAL INSTITUTE OF GENERAL MEDICAL SCIENCES [R01GM065293] Funding Source: NIH RePORTER
- NATIONAL INSTITUTE ON DRUG ABUSE [R21DA016249] Funding Source: NIH RePORTER
- NIDA NIH HHS [DA 16249-01] Funding Source: Medline
- NIGMS NIH HHS [GM 65293-01] Funding Source: Medline
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Plastics are increasingly being used for the fabrication of Lab-on-a-Chip devices due to the variety of beneficial material properties, affordable cost, and straightforward fabrication methods available from a range of different types of plastics. Rapid prototyping of polydimethylsiloxane (PDMS) devices has become a well-known process for the quick and easy fabrication of microfluidic devices in the research laboratory; however, PDMS is not always an appropriate material for every application. This paper describes the fabrication of thermoset polyester microfluidic devices and masters for hot embossing using replica molding techniques. Rapid prototyped PDMS molds are convienently used for the production of non-PDMS polymeric devices. The recessed features in the cast polyester can be bonded to a second polyester piece to form an enclosed microchannel. Thermoset polyester can withstand moderate amounts of pressure and elevated temperature; therefore, the cast polyester piece also can be used as a master for embossing polymethylmethacrylate (PMMA) microfluidic systems. Examples of enclosed polyester and PMMA microchannels are presented, and we discuss the electroosmotic properties of both types of channels, which are important for analytical applications such as capillary electrophoresis.
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